/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:13:44,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:13:44,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:13:44,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:13:44,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:13:44,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:13:44,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:13:44,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:45,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:45,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:45,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:45,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:45,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:45,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:45,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:45,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:45,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:45,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:45,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:45,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:45,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:45,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:45,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:45,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:45,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:45,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:45,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:45,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:45,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:45,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:45,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:45,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:45,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:45,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:45,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:45,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:45,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:45,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:45,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:45,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:45,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:45,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:13:45,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:45,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:45,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:45,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:45,061 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:45,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:45,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:45,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:45,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:45,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:45,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:45,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:45,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:45,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:45,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:45,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:45,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:45,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:45,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:45,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:45,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:45,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:45,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:45,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:45,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:45,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:45,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:45,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:45,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:45,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:13:45,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:45,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:45,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:45,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:45,559 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:45,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-09-25 10:13:45,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ad8fff7/07e609606f0a41caa307ba6ad160318d/FLAG1d63b60ff [2020-09-25 10:13:46,213 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:46,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-09-25 10:13:46,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ad8fff7/07e609606f0a41caa307ba6ad160318d/FLAG1d63b60ff [2020-09-25 10:13:46,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ad8fff7/07e609606f0a41caa307ba6ad160318d [2020-09-25 10:13:46,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:46,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:46,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:46,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:46,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:46,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:46,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bfb0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46, skipping insertion in model container [2020-09-25 10:13:46,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:46,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:46,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:46,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:46,865 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:46,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:46,925 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:46,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46 WrapperNode [2020-09-25 10:13:46,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:46,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:46,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:46,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:47,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:47,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:47,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:47,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:47,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:47,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:47,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... [2020-09-25 10:13:47,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:47,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:47,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:47,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:47,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:47,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:47,784 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 10:13:47,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:47 BoogieIcfgContainer [2020-09-25 10:13:47,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:47,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:47,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:47,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:47,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:46" (1/3) ... [2020-09-25 10:13:47,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64612f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:47, skipping insertion in model container [2020-09-25 10:13:47,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:46" (2/3) ... [2020-09-25 10:13:47,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64612f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:47, skipping insertion in model container [2020-09-25 10:13:47,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:47" (3/3) ... [2020-09-25 10:13:47,802 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-09-25 10:13:47,811 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:47,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:47,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:47,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:47,877 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:47,877 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:47,877 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:47,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:47,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:47,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:47,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-09-25 10:13:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 10:13:47,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:47,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:47,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1507146259, now seen corresponding path program 1 times [2020-09-25 10:13:47,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:47,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690846503] [2020-09-25 10:13:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:48,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:48,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:13:48,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 10:13:48,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:48,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:48,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 10:13:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:13:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:48,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:48,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:48,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:48,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:13:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:48,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690846503] [2020-09-25 10:13:48,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:48,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:13:48,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394052266] [2020-09-25 10:13:48,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:13:48,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:48,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:13:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:13:48,315 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 3 states. [2020-09-25 10:13:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:48,399 INFO L93 Difference]: Finished difference Result 369 states and 507 transitions. [2020-09-25 10:13:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:13:48,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-25 10:13:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:48,421 INFO L225 Difference]: With dead ends: 369 [2020-09-25 10:13:48,421 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 10:13:48,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:13:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 10:13:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-25 10:13:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 10:13:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2020-09-25 10:13:48,490 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 22 [2020-09-25 10:13:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:48,490 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2020-09-25 10:13:48,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:13:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2020-09-25 10:13:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 10:13:48,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:48,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:48,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:48,493 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -946920198, now seen corresponding path program 1 times [2020-09-25 10:13:48,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:48,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298822885] [2020-09-25 10:13:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:48,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:13:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 10:13:48,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:48,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:13:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:48,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:48,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:13:48,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:48,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:48,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298822885] [2020-09-25 10:13:48,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:48,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:48,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842607108] [2020-09-25 10:13:48,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:48,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:48,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:48,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:48,746 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand 4 states. [2020-09-25 10:13:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:49,246 INFO L93 Difference]: Finished difference Result 496 states and 601 transitions. [2020-09-25 10:13:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:49,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-25 10:13:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:49,250 INFO L225 Difference]: With dead ends: 496 [2020-09-25 10:13:49,250 INFO L226 Difference]: Without dead ends: 307 [2020-09-25 10:13:49,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-25 10:13:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 270. [2020-09-25 10:13:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-25 10:13:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2020-09-25 10:13:49,288 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 23 [2020-09-25 10:13:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:49,289 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2020-09-25 10:13:49,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2020-09-25 10:13:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 10:13:49,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:49,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:49,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:49,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:49,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:49,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1459950525, now seen corresponding path program 1 times [2020-09-25 10:13:49,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:49,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237995452] [2020-09-25 10:13:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:49,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:13:49,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 10:13:49,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:49,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:13:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:49,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:49,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:49,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:13:49,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:49,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:49,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237995452] [2020-09-25 10:13:49,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:49,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:49,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033663029] [2020-09-25 10:13:49,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:49,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:49,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:49,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:49,453 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand 4 states. [2020-09-25 10:13:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:49,858 INFO L93 Difference]: Finished difference Result 541 states and 657 transitions. [2020-09-25 10:13:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:49,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-25 10:13:49,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:49,861 INFO L225 Difference]: With dead ends: 541 [2020-09-25 10:13:49,862 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 10:13:49,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:49,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 10:13:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2020-09-25 10:13:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 10:13:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-09-25 10:13:49,901 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 31 [2020-09-25 10:13:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:49,902 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-09-25 10:13:49,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-09-25 10:13:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 10:13:49,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:49,907 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:49,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:49,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:49,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:49,908 INFO L82 PathProgramCache]: Analyzing trace with hash -47890514, now seen corresponding path program 1 times [2020-09-25 10:13:49,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:49,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248210363] [2020-09-25 10:13:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:13:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 10:13:50,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:50,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 10:13:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:50,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:50,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:50,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:13:50,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:50,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:50,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248210363] [2020-09-25 10:13:50,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:50,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:50,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557208961] [2020-09-25 10:13:50,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:50,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:50,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:50,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:50,082 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 4 states. [2020-09-25 10:13:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:50,371 INFO L93 Difference]: Finished difference Result 486 states and 586 transitions. [2020-09-25 10:13:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:50,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-25 10:13:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:50,374 INFO L225 Difference]: With dead ends: 486 [2020-09-25 10:13:50,374 INFO L226 Difference]: Without dead ends: 225 [2020-09-25 10:13:50,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-09-25 10:13:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2020-09-25 10:13:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-25 10:13:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 267 transitions. [2020-09-25 10:13:50,387 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 267 transitions. Word has length 40 [2020-09-25 10:13:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:50,388 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 267 transitions. [2020-09-25 10:13:50,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 267 transitions. [2020-09-25 10:13:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:13:50,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:50,390 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:50,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:50,390 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:50,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1667007108, now seen corresponding path program 1 times [2020-09-25 10:13:50,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:50,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913106815] [2020-09-25 10:13:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:50,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 10:13:50,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:50,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:13:50,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:50,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 10:13:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:13:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:50,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:50,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:13:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:50,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:13:50,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913106815] [2020-09-25 10:13:50,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:50,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:50,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108063187] [2020-09-25 10:13:50,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:50,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:50,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:50,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:50,494 INFO L87 Difference]: Start difference. First operand 223 states and 267 transitions. Second operand 4 states. [2020-09-25 10:13:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:50,650 INFO L93 Difference]: Finished difference Result 384 states and 461 transitions. [2020-09-25 10:13:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:50,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 10:13:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:50,652 INFO L225 Difference]: With dead ends: 384 [2020-09-25 10:13:50,652 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 10:13:50,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 10:13:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-25 10:13:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 10:13:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 204 transitions. [2020-09-25 10:13:50,662 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 204 transitions. Word has length 43 [2020-09-25 10:13:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:50,664 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 204 transitions. [2020-09-25 10:13:50,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 204 transitions. [2020-09-25 10:13:50,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:13:50,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:50,669 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:50,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:50,669 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:50,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1459500481, now seen corresponding path program 1 times [2020-09-25 10:13:50,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:50,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234660704] [2020-09-25 10:13:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 10:13:50,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:13:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:50,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:13:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:13:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:50,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:50,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:13:50,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:50,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:13:50,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234660704] [2020-09-25 10:13:50,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:50,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:50,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903433937] [2020-09-25 10:13:50,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:50,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:50,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:50,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:50,789 INFO L87 Difference]: Start difference. First operand 174 states and 204 transitions. Second operand 4 states. [2020-09-25 10:13:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:51,159 INFO L93 Difference]: Finished difference Result 372 states and 446 transitions. [2020-09-25 10:13:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:51,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-25 10:13:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:51,166 INFO L225 Difference]: With dead ends: 372 [2020-09-25 10:13:51,166 INFO L226 Difference]: Without dead ends: 264 [2020-09-25 10:13:51,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-25 10:13:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 239. [2020-09-25 10:13:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-25 10:13:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 282 transitions. [2020-09-25 10:13:51,183 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 282 transitions. Word has length 51 [2020-09-25 10:13:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:51,183 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 282 transitions. [2020-09-25 10:13:51,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 282 transitions. [2020-09-25 10:13:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:13:51,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:51,185 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:51,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:13:51,186 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:51,186 INFO L82 PathProgramCache]: Analyzing trace with hash -389028907, now seen corresponding path program 1 times [2020-09-25 10:13:51,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:51,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757016499] [2020-09-25 10:13:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:51,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:51,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 10:13:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 10:13:51,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:51,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 10:13:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:51,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:13:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:13:51,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757016499] [2020-09-25 10:13:51,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:51,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:51,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8450540] [2020-09-25 10:13:51,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:51,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:51,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:51,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:51,336 INFO L87 Difference]: Start difference. First operand 239 states and 282 transitions. Second operand 4 states. [2020-09-25 10:13:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:51,528 INFO L93 Difference]: Finished difference Result 389 states and 463 transitions. [2020-09-25 10:13:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:51,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-25 10:13:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:51,530 INFO L225 Difference]: With dead ends: 389 [2020-09-25 10:13:51,531 INFO L226 Difference]: Without dead ends: 219 [2020-09-25 10:13:51,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-25 10:13:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2020-09-25 10:13:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-25 10:13:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 254 transitions. [2020-09-25 10:13:51,542 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 254 transitions. Word has length 52 [2020-09-25 10:13:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:51,542 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 254 transitions. [2020-09-25 10:13:51,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 254 transitions. [2020-09-25 10:13:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 10:13:51,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:51,544 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:51,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:13:51,545 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash 910217494, now seen corresponding path program 1 times [2020-09-25 10:13:51,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:51,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960339524] [2020-09-25 10:13:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:51,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:13:51,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 10:13:51,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:51,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:13:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:51,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:51,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:51,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:51,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:51,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:13:51,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:51,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:13:51,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960339524] [2020-09-25 10:13:51,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:51,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:51,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970156343] [2020-09-25 10:13:51,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:51,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:51,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:51,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:51,685 INFO L87 Difference]: Start difference. First operand 217 states and 254 transitions. Second operand 4 states. [2020-09-25 10:13:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:51,871 INFO L93 Difference]: Finished difference Result 322 states and 377 transitions. [2020-09-25 10:13:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:51,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 10:13:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:51,874 INFO L225 Difference]: With dead ends: 322 [2020-09-25 10:13:51,874 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 10:13:51,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 10:13:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-25 10:13:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 10:13:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2020-09-25 10:13:51,883 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 54 [2020-09-25 10:13:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:51,883 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2020-09-25 10:13:51,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2020-09-25 10:13:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 10:13:51,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:51,884 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:51,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:13:51,884 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:51,885 INFO L82 PathProgramCache]: Analyzing trace with hash 57784286, now seen corresponding path program 1 times [2020-09-25 10:13:51,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:51,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077223543] [2020-09-25 10:13:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:51,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:51,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 10:13:51,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 10:13:51,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:51,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 10:13:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:13:51,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:51,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:51,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:13:51,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:51,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:51,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:13:52,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077223543] [2020-09-25 10:13:52,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:52,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:52,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294818415] [2020-09-25 10:13:52,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:52,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:52,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:52,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:52,010 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand 4 states. [2020-09-25 10:13:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:52,250 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2020-09-25 10:13:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:52,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 10:13:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:52,252 INFO L225 Difference]: With dead ends: 176 [2020-09-25 10:13:52,252 INFO L226 Difference]: Without dead ends: 171 [2020-09-25 10:13:52,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-25 10:13:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-25 10:13:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-25 10:13:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 194 transitions. [2020-09-25 10:13:52,259 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 194 transitions. Word has length 55 [2020-09-25 10:13:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:52,260 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 194 transitions. [2020-09-25 10:13:52,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 194 transitions. [2020-09-25 10:13:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 10:13:52,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:52,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:52,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:13:52,263 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:52,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1987485698, now seen corresponding path program 1 times [2020-09-25 10:13:52,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:52,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680527226] [2020-09-25 10:13:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:52,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:13:52,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:13:52,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:52,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 10:13:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:13:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:52,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:13:52,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:52,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:13:52,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:52,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:13:52,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680527226] [2020-09-25 10:13:52,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:52,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:52,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789294778] [2020-09-25 10:13:52,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:52,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:52,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:52,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:52,370 INFO L87 Difference]: Start difference. First operand 171 states and 194 transitions. Second operand 4 states. [2020-09-25 10:13:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:52,575 INFO L93 Difference]: Finished difference Result 263 states and 301 transitions. [2020-09-25 10:13:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:13:52,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 10:13:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:52,576 INFO L225 Difference]: With dead ends: 263 [2020-09-25 10:13:52,576 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:13:52,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:52,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:13:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:13:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:13:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:13:52,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-25 10:13:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:52,579 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:13:52,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:13:52,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:13:52,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:13:52,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:13:52,916 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:13:52,917 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:13:52,917 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-09-25 10:13:52,918 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 10:13:52,919 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:13:52,919 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 10:13:52,919 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 10:13:52,919 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:13:52,919 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:13:52,919 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:13:52,919 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:13:52,920 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:13:52,921 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-09-25 10:13:52,921 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-09-25 10:13:52,921 INFO L268 CegarLoopResult]: For program point L300(line 300) no Hoare annotation was computed. [2020-09-25 10:13:52,921 INFO L268 CegarLoopResult]: For program point L300-1(lines 300 315) no Hoare annotation was computed. [2020-09-25 10:13:52,921 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-09-25 10:13:52,921 INFO L268 CegarLoopResult]: For program point L300-2(line 300) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L300-3(line 300) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L268(line 268) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L368(line 368) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-09-25 10:13:52,922 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-09-25 10:13:52,923 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-09-25 10:13:52,923 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 10:13:52,923 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-09-25 10:13:52,924 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-09-25 10:13:52,924 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-09-25 10:13:52,924 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-09-25 10:13:52,924 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-09-25 10:13:52,924 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 10:13:52,924 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-09-25 10:13:52,925 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-09-25 10:13:52,925 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-09-25 10:13:52,925 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 10:13:52,925 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-09-25 10:13:52,925 INFO L268 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-09-25 10:13:52,925 INFO L268 CegarLoopResult]: For program point L274(line 274) no Hoare annotation was computed. [2020-09-25 10:13:52,926 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-09-25 10:13:52,926 INFO L268 CegarLoopResult]: For program point L374(line 374) no Hoare annotation was computed. [2020-09-25 10:13:52,926 INFO L268 CegarLoopResult]: For program point L242(line 242) no Hoare annotation was computed. [2020-09-25 10:13:52,926 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 10:13:52,926 INFO L268 CegarLoopResult]: For program point L342(line 342) no Hoare annotation was computed. [2020-09-25 10:13:52,926 INFO L268 CegarLoopResult]: For program point L276(line 276) no Hoare annotation was computed. [2020-09-25 10:13:52,926 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-09-25 10:13:52,927 INFO L268 CegarLoopResult]: For program point L376(line 376) no Hoare annotation was computed. [2020-09-25 10:13:52,927 INFO L268 CegarLoopResult]: For program point L310(line 310) no Hoare annotation was computed. [2020-09-25 10:13:52,927 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-25 10:13:52,927 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-09-25 10:13:52,928 INFO L268 CegarLoopResult]: For program point L344(line 344) no Hoare annotation was computed. [2020-09-25 10:13:52,928 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-09-25 10:13:52,928 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-25 10:13:52,928 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-09-25 10:13:52,928 INFO L268 CegarLoopResult]: For program point L80-1(lines 80 95) no Hoare annotation was computed. [2020-09-25 10:13:52,928 INFO L268 CegarLoopResult]: For program point L80-2(line 80) no Hoare annotation was computed. [2020-09-25 10:13:52,928 INFO L268 CegarLoopResult]: For program point L80-3(line 80) no Hoare annotation was computed. [2020-09-25 10:13:52,929 INFO L268 CegarLoopResult]: For program point L312(line 312) no Hoare annotation was computed. [2020-09-25 10:13:52,929 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-25 10:13:52,929 INFO L268 CegarLoopResult]: For program point L48-1(lines 48 63) no Hoare annotation was computed. [2020-09-25 10:13:52,929 INFO L268 CegarLoopResult]: For program point L48-2(line 48) no Hoare annotation was computed. [2020-09-25 10:13:52,929 INFO L268 CegarLoopResult]: For program point L48-3(line 48) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L148-1(lines 148 163) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L148-2(line 148) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L148-3(line 148) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L248(line 248) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L248-1(lines 248 263) no Hoare annotation was computed. [2020-09-25 10:13:52,930 INFO L268 CegarLoopResult]: For program point L248-2(line 248) no Hoare annotation was computed. [2020-09-25 10:13:52,931 INFO L268 CegarLoopResult]: For program point L248-3(line 248) no Hoare annotation was computed. [2020-09-25 10:13:52,931 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-25 10:13:52,931 INFO L268 CegarLoopResult]: For program point L116-1(lines 116 131) no Hoare annotation was computed. [2020-09-25 10:13:52,931 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-09-25 10:13:52,931 INFO L268 CegarLoopResult]: For program point L116-2(line 116) no Hoare annotation was computed. [2020-09-25 10:13:52,932 INFO L268 CegarLoopResult]: For program point L116-3(line 116) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L348(line 348) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L348-1(lines 348 363) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L348-2(line 348) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L348-3(line 348) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L216-1(lines 216 231) no Hoare annotation was computed. [2020-09-25 10:13:52,933 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L216-2(line 216) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L216-3(line 216) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L316(line 316) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L316-1(lines 316 331) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L316-2(line 316) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L316-3(line 316) no Hoare annotation was computed. [2020-09-25 10:13:52,934 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L184-1(lines 184 199) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L184-2(line 184) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L184-3(line 184) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L284(line 284) no Hoare annotation was computed. [2020-09-25 10:13:52,935 INFO L268 CegarLoopResult]: For program point L284-1(lines 284 299) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L284-2(line 284) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L284-3(line 284) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L252(line 252) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-09-25 10:13:52,936 INFO L268 CegarLoopResult]: For program point L352(line 352) no Hoare annotation was computed. [2020-09-25 10:13:52,937 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-09-25 10:13:52,937 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-09-25 10:13:52,937 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-25 10:13:52,937 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-09-25 10:13:52,937 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-09-25 10:13:52,937 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-09-25 10:13:52,937 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-09-25 10:13:52,937 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-09-25 10:13:52,938 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-25 10:13:52,938 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-09-25 10:13:52,938 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-09-25 10:13:52,938 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 10:13:52,938 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-09-25 10:13:52,939 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-25 10:13:52,939 INFO L268 CegarLoopResult]: For program point L258(line 258) no Hoare annotation was computed. [2020-09-25 10:13:52,939 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-25 10:13:52,939 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-09-25 10:13:52,939 INFO L268 CegarLoopResult]: For program point L358(line 358) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L226(line 226) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L28-1(lines 28 43) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L326(line 326) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L260(line 260) no Hoare annotation was computed. [2020-09-25 10:13:52,940 INFO L268 CegarLoopResult]: For program point L194(line 194) no Hoare annotation was computed. [2020-09-25 10:13:52,941 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-25 10:13:52,941 INFO L268 CegarLoopResult]: For program point L360(line 360) no Hoare annotation was computed. [2020-09-25 10:13:52,941 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-09-25 10:13:52,941 INFO L268 CegarLoopResult]: For program point L228(line 228) no Hoare annotation was computed. [2020-09-25 10:13:52,941 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-09-25 10:13:52,941 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-09-25 10:13:52,941 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-09-25 10:13:52,941 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L64-1(lines 64 79) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L64-2(line 64) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L64-3(line 64) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L164-1(lines 164 179) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L164-2(line 164) no Hoare annotation was computed. [2020-09-25 10:13:52,942 INFO L268 CegarLoopResult]: For program point L164-3(line 164) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L264(line 264) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L264-1(lines 264 279) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L264-2(line 264) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L264-3(line 264) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L132-1(lines 132 147) no Hoare annotation was computed. [2020-09-25 10:13:52,943 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L132-2(line 132) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L132-3(line 132) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L364(line 364) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L364-1(lines 364 379) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L364-2(line 364) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L364-3(line 364) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-09-25 10:13:52,944 INFO L268 CegarLoopResult]: For program point L232-1(lines 232 247) no Hoare annotation was computed. [2020-09-25 10:13:52,945 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-09-25 10:13:52,945 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-09-25 10:13:52,945 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-09-25 10:13:52,945 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-25 10:13:52,945 INFO L268 CegarLoopResult]: For program point L100-1(lines 100 115) no Hoare annotation was computed. [2020-09-25 10:13:52,945 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-25 10:13:52,945 INFO L268 CegarLoopResult]: For program point L100-2(line 100) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L100-3(line 100) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L332(line 332) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L332-1(lines 332 347) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L332-2(line 332) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L332-3(line 332) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-09-25 10:13:52,946 INFO L268 CegarLoopResult]: For program point L200-1(lines 200 215) no Hoare annotation was computed. [2020-09-25 10:13:52,947 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-09-25 10:13:52,947 INFO L268 CegarLoopResult]: For program point L200-2(line 200) no Hoare annotation was computed. [2020-09-25 10:13:52,947 INFO L268 CegarLoopResult]: For program point L200-3(line 200) no Hoare annotation was computed. [2020-09-25 10:13:52,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:13:52 BoogieIcfgContainer [2020-09-25 10:13:52,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:13:52,984 INFO L168 Benchmark]: Toolchain (without parser) took 6440.93 ms. Allocated memory was 146.3 MB in the beginning and 287.8 MB in the end (delta: 141.6 MB). Free memory was 101.4 MB in the beginning and 226.3 MB in the end (delta: -124.8 MB). Peak memory consumption was 149.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:13:52,985 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 10:13:52,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.14 ms. Allocated memory is still 146.3 MB. Free memory was 100.6 MB in the beginning and 88.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:13:52,989 INFO L168 Benchmark]: Boogie Preprocessor took 165.59 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 88.1 MB in the beginning and 179.7 MB in the end (delta: -91.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:13:52,991 INFO L168 Benchmark]: RCFGBuilder took 699.46 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 142.5 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:13:52,992 INFO L168 Benchmark]: TraceAbstraction took 5186.11 ms. Allocated memory was 202.4 MB in the beginning and 287.8 MB in the end (delta: 85.5 MB). Free memory was 142.5 MB in the beginning and 226.3 MB in the end (delta: -83.8 MB). Peak memory consumption was 134.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:13:53,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.14 ms. Allocated memory is still 146.3 MB. Free memory was 100.6 MB in the beginning and 88.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.59 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 88.1 MB in the beginning and 179.7 MB in the end (delta: -91.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.46 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 142.5 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5186.11 ms. Allocated memory was 202.4 MB in the beginning and 287.8 MB in the end (delta: 85.5 MB). Free memory was 142.5 MB in the beginning and 226.3 MB in the end (delta: -83.8 MB). Peak memory consumption was 134.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1908 SDtfs, 2810 SDslu, 111 SDs, 0 SdLazy, 1268 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 76 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 79 HoareAnnotationTreeSize, 7 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 194 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 35473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 49/49 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...